please, please when doing the armchair mapping thing, be aware that aerial imagery may be several years out of date.
yesterday i discovered that a highway reconfiguration i'd mapped in Rensselaer, NY had been realigned with the out-of-date bing aerial imagery. i was able to locate my GPX tracks and put it back, but i still had to revisit the site to re-verify some connecting roads. i had even put a README tag on the roads warning that the imagery was out of date, but the armchair mapper didn't bother to, you know, read the README. i don't object to careful armchair mapping, i do it myself, but you need to keep in mind that the imagery available may a number of years old. i can name a number of highways in the Capital District of NY where the imagery is old and the highways have been realigned and/or reconfigured. this will be true in many places. if you see a mismatch, it would be a good idea to look at the history and try to contact the the mapper responsible for the mismatch first. thanks, richard -- rwe...@averillpark.net Averill Park Networking - GIS & IT Consulting OpenStreetMap - PostgreSQL - Linux Java - Web Applications - Search
signature.asc
Description: OpenPGP digital signature
_______________________________________________ Talk-us mailing list Talk-us@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-us